W83L518D_05 Datasheet, PDF (14/25 Pages) Winbond – Integrated Media Reader

;
MOV DX, 2Eh
MOV AL, F0H
OUT DX, AL
; select CRF0
MOV DX, 2Fh
MOV AL, 3Ch
OUT DX, AL
; update CRF0 with value 3CH
;------------------------------------------
; Exit extended function mode |
;------------------------------------------
MOV DX, 2Eh
MOV AL, AAh
OUT DX, AL
6.4 Global Registers
CR02 (Default 00h, write only)
Bit [7:1]: Reserved.
Bit 0: SWRST
= 0 Normal operation.
= 1 Software reset.
CR07 (Default 00h)
Bit [7:0]: Logical Device Number.
CR20 (read only)
Bit [7:0]: Device ID number (higher byte).
= 71h
CR21 (read only)
Bit [7:0]: Device ID number (lower byte)
= 1Xh (for W83L518D)
= 2Xh (for W83L519D)
X: Revision number
CR22 (Default 80h)
Bit 7: SCPWD
= 0 Power down Smart Card interface.
= 1 No Power down.
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W83L518D